CVE-2022-49969 drm/amd/display: clear optc underflow before turn off odm clock
A bug in the Linux kernel's AMD display driver causes persistent underflow bits, potentially leading to system instability or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-49969?
CVE-2022-49969 is a high-severity denial of service vulnerability in Linux kernel, published on 18 Jun 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: clear optc underflow before turn off odm clock
[Why] After ODM clock off, optc underflow bit will be kept there always and clear not work. We need to clear that before clock off.
[How] Clear that if have when clock off.
Which versions are affected by CVE-2022-49969?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-49969?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2022-49969 being exploited?
There is no known exploitation of CVE-2022-49969 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-49969, GHSA-h66g-j8m6-ppxf, UBUNTU-CVE-2022-49969.